Valve for tires.



j .w.`A'. CAMPBELL.; l vvALvE Fon TIRES. APLI'CATION FlfED NOV. 16, 1914;

Patented Feb.1,1916.

UNITED STATES PATENT Ormea.

WILLIAM A. CAMPBELL, F MARICOPA, CALIFORNIA.

VALVE For. TIRES.

To all 'whom it may concern."

Be it known that I, IVILLIAM A. CAMP- BELL, a citizen of the United States, residing at Maricopa, in the county of Kern, State of California, have invented certain new.4

simple and novel tire valve which may be readily inserted and removed and which may be quickly and easily assembled or taken apart lfor repairing.

Animportant object is the provisionof a valve of this character which may be removed without twisting the stem and in which the rubber washer may be readily replacedwhen worn.

Another object is the provision of a valve of this character simple and inexpensive in manufacture, efficient and durable in use and a general improvement of the art.

IVith these and other objects and advantages in view, the invention consists'in the novel construction and arrangement of parts to be hereinafter more fully described and claimed and illustrated in the accompanying drawing, in which- Figure 1 is an elevation of my valve applied to a tire, Fig. 2 is an enlarged vertical sectional view therethrough, and Fig. 3 is an enlarged detail fragmentary section.

Referring more particularly t0 the drawing the numeral 5 designates a tire having the usual stem 6 extending therefrom 'to which my device is yadapted to be applied. The stein 6 is provided with the usual passage 7 and externally screw threaded as shown.

y My novel valve comprises a body portion 8 having an annular knurled or milled extension 9 thereon to form agrip. Adjacent each side of the extension 9 are reduced por-. tions 10 and 11 which are externally screw threaded as shown. A bore 12 extends axially through the major portion 'of the body portion 8 and communicates with a smaller bore 13 which extends to the end of the reduced portion 11. The lower end of the portion 11 is further provided with a circular recess 14 within which is disposed a Specification of Letters Patent.

Application led November 16, 1914. Serial No. 872,446. i

rubber disk 15 which is held in place by bending over the metal at the edge as shown at 16. Disposed within the bore 13 is a sleeve 17 which is flared outwardly at its lower ends as shown at 18, the flared portion extendlng through a hole -19 in the disk 15, the extreme outer end of the fiared portion being bent over as shown at 20 to assist in holding the disk 15 in place.

Extending through the 'bore y12 and through the sleeve 17 is a valve rod 21 which 1s provided at its end with a tapered portion 22 fitting loosely withinthe opening in the ared portion 18 of the sleeve. Secured upon the end of the tapered portion 22 :is a concave 4r1ng 23 which has its outer edge 24Vnormally seating upon the disk 15 and consequently making an air-tight joint. The other end of the rod 21 is screw threaded as shown and carries a guide plate 25 which 1s prevented from displacement by a lock nut 26. A coil spring 27 surrounds the rod 21 and is disposed within the bore 12, the sprlng abutting against the shoulder 28 at the junction of the two bores and also abutting against the guide plate 25.

My novel valve is "attached to the stem 6 lby means lof a coupling 29 which is interally screw threaded and which engages vthe screw threaded portions of the stem 6 and the extension 11.

In the use of-my device it will be seen that normally the ring 23 will bear firmly against the disk 15 and prevent the escape of air from the tire. inflate the tire, the pump attaching nipple is screwed upon the extension 10 in the usual manner, whereupon the air from the pump will pass through the bore `12, through the sleeve 17 and against the ring 23, forcing the ring from its seat and allowing air to pass into the tire.

From the foregoing description 'and a study of the drawing it will be apparent that I have thus provided a simple and novel waive which may be quickly and easily used,1

on or removed from a tire and which may be readily taken apart for c eaning or rerubber disk. When air is admitted into the tire and theffing 23 displaced, it will quickly reseat itself and prevent the escape of any air. If it is desired to put in a new rubber When it is desired to disk, the valve may be readily removed from the coupling 29, after which the nut 26 and guide plate may be removed whereupon the valve rod may be pulled out and a ne\ rubber disk inserted.

It will be4 readily understood that I reserve the right to make various changes in the form, constructiony and arrangementof parts without departing from the spirit of the invention or limiting the scope of th subjoined claim'. y

Having thus described my invention, I claim:

In combination with the threaded nipple of a tire, a valve comprising a body portion having its ends formed reduced and externally threaded, said body portion being provided with a comparatively large bore eX- tending through its major portion and a\` smaller bore communicating therewith, a 'rubber disk recessed into the end of the inner reduced portion, a sleeve extending through said smaller bore and having an outwardly flared end, a valve rod extending through said large bore and said sleeve, a guide collar threaded upon one end of said rod, a cupped disk secured upon the other end of said rod and normally seating against said rubber disk, the portion of said rod adjacent said cupped disk being tapered to conform to the flared endof saidvsleeve, a coil spring surrounding said rod and abutting against the end of said larger bore and said guide collar, and a coupling ring threaded upon the inner reduced extension and said nipple.

In testimony whereof, I aix my signature in the presence of-two witnesses.

WILLIAM A.v CAMPBELL. lVitnesses: l

E. L. TIFFANY., WM. LUCAS. 

